Chemistry for nursing entrance exams worksheet with answers

Which of these is a polyatomic ion?

1. AChloride, Cl⁻
2. BOxide, O²⁻
3. CSulfate, SO₄²⁻
4. DSodium, Na⁺

Which property is typical of metals?

1. AThey conduct electricity well
2. BThey are brittle solids that shatter
3. CMost of them are gases at room temperature
4. DThey are poor conductors of heat

In a solution, what is the solvent?

1. AThe gas given off when a solid dissolves
2. BThe substance that does the dissolving, usually present in the larger amount
3. CAny solid that will not dissolve, however long it is stirred
4. DThe substance that is dissolved, usually present in the smaller amount

Why does the vapour pressure of a liquid increase as it is heated?

1. AThe liquid's volume decreases and squeezes out vapour
2. BThe molecules become heavier and press harder on the surface
3. CThe attractions between the molecules become stronger
4. DMore molecules have enough energy to escape into the gas phase

Going across a period from left to right, how does the atomic radius generally change?

1. AIt increases
2. BIt stays exactly the same
3. CIt first doubles, then halves
4. DIt decreases

Which substance is a non-electrolyte when dissolved in water?

1. AGlucose
2. BPotassium chloride
3. CSodium chloride
4. DHydrochloric acid

Under which conditions does a real gas behave least like an ideal gas?

1. ALow pressure and low volume of particles
2. BHigh temperature and large container
3. CHigh pressure and low temperature
4. DLow pressure and high temperature

Alkanes follow the general formula CₙH₂ₙ₊₂. What is the formula of the alkane with 4 carbon atoms?

1. AC₄H₁₀
2. BC₄H₁₂
3. CC₄H₈
4. DC₄H₆